GermanSolar USA Inc. GSM10-108-440W

Mono-c-Si

440 W Pmax

39.37 V Voc

13.8 A Isc

34.02 V Vmp

12.93 A Imp

24.3 % eff.

0.8096 FF

54 cells

Download .PAN for PVsyst Open in PV Explorer Compare with a similar module Soiling and off-MPP calculators

IV & PV Curves at STC (1000 W/m², 25 °C)

IV Curves at Multiple Conditions

Irradiance sweep at 25 °C

Temperature sweep at 1000 W/m²

Single-Diode Model Parameters

Source: California Energy Commission module list · retrieved via SAM library · energy.ca.gov · All data sources

Parameter	Symbol	Value	Unit
Nameplate (STC)
STC Power	STC	439.879	W
PTC Power	PTC	418.7	W
Open-circuit voltage	V_oc_ref	39.37	V
Short-circuit current	I_sc_ref	13.8	A
Max-power voltage	V_mp_ref	34.02	V
Max-power current	I_mp_ref	12.93	A
Fill factor	FF	0.8096	—
Efficiency (STC)	η	24.3	%
Temperature Coefficients
Isc temperature coefficient	alpha_sc	0.0061	A/°C
Voc temperature coefficient	beta_oc	-0.089823	V/°C
Pmax temperature coefficient	gamma_r	-0.2964	%/°C
NOCT	T_NOCT	43.4	°C
Single-Diode (De Soto) Parameters
Modified ideality factor	a_ref	1.39246	V
Light-generated current (ref)	I_L_ref	13.80909	A
Saturation current (ref)	I_o_ref	7.05e-12	A
Series resistance	R_s	0.06555	Ω
Shunt resistance (ref)	R_sh_ref	99.529	Ω
Cells in series	N_s	108	—
CEC Adjust factor	Adjust	12.8487	%

The CEC list gives 108 cells in series, which puts 0.37 V on each cell. A silicon cell gives 0.55 to 0.80 V, so PV Ivy uses 54 cells in series for the .PAN file and Similar Modules, found from the model name (108 half cells).

Actions

Open in PV Explorer Generate PAN File Datasheet not on file CEC Source Data

Module Specifications

Technology Mono-c-Si

Bifacial No

BIPV No

Cells in series 54 (inferred, CEC lists 108)

Module area 1.81 m²

NOCT 43.4 °C

Temp. coefficient of Pmax -0.296 %/°C

Temp. coefficient of Voc -0.228 %/°C

Temp. coefficient of Isc 0.044 %/°C

CEC list On the 23 Jun 2026 list

Parameters from 23 Jun 2026 list

Measured Data

No measured data yet for this module.

Related Models

All GermanSolar USA Inc. modules →

Similar Modules

Other manufacturers, same technology and cell count, power within 3 %.